program zada4_1_1;
var
n,v,v1:real;
begin
writeln('kilkist_varenukyv_N');
readln(N);
writeln('vvedit_vagy_varenuka_V');
readln(V);
v1:=n*v;
writeln('vaga_vsix_varenukiv_v1_',v1:5:2);
end.